/Engine/Plugins/Runtime/Metasound/Source/MetasoundFrontend/Public/MetasoundFrontendDocumentBuilder.h
const [FMetasoundFrontendNode](API\Plugins\MetasoundFrontend\FMetasoundFrontendNode) * AddGraphOutput ( const [FMetasoundFrontendClassOutput](API\Plugins\MetasoundFrontend\FMetasoundFrontendClassOutput) & InClassOutput )